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    Question

    The ratio of length and breadth of a rectangular field

    is 5:3. If the total cost of surrounding it at the rate of Rs 7.50 per meter is Rs 3000, then find the difference between the length and breadth of the field.
    A 25m Correct Answer Incorrect Answer
    B 50m Correct Answer Incorrect Answer
    C 125m Correct Answer Incorrect Answer
    D 75m Correct Answer Incorrect Answer

    Solution

    The ratio of length and breadth = 5:3 Length of field = 5x and breadth = 3x Then perimeter of field = 2(5x+3x) = 16x ATQ- 16x × 7.50 = 3000 16x = 3000/7.50=400 x = 25 Now difference between length and breadth =2×25 = 50 meters

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